Jump to content

7805 Circuitboard Screw?


Recommended Posts

I've looked and looked, but no luck, so sorry if this is something listed elsewhere.


I have a couple of used 2600s I've purchased, and TWO of them (a Vader and a Jr.) were missing the screw that holds the 7805 against what I'm assuming is a heat sink. The little, stubby screw is what I'm looking for


I'd like to buy replacements for them, but I have no idea what size/thread screw I'm looking for. Does anyone have the spec for these, so a hardware-ignorant schmuck like me can walk into a hardware store and say "Hi, I need _____, please."?


... And was it common for consoles to ship without these? It seemed weird when the Jr came without one, but I figured it had just rattled out over the years or had been removed or something. But on the Vader (which I just purchased), the screw hole actually seems to be filled with a blob of solder (from the factory). What's the deal with all that?

Link to comment
Share on other sites

For 7805 in TO-220 package (like the one used in VCS, Junior and countless other consoles) we use M3 screws here in Europe.

It's a standard used throughout all heatsinks dedicated to TO-220 components. Attached pic of my spares. It doesn't show too well, but those are pan heads (slightly convex) like chas10e said above.


P.S. Remember to throughly clean all the surfaces and apply some thermal paste between 7805 and the heatsink!


Edited by Mef
Link to comment
Share on other sites

ok looks like it may also be a "computer case screw"




the 4 switch board I was tinkering with has the coarse 6-32 threads but the hex head shape is to large


I guess m3 screws come packaged as well that have finer threads


also for the record ... my vader unit I recall doesn't hav the 7805 srewed to board (with thermal paste) , I suspect someone long ago may have replaced it :roll: ...

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...